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can you please tell me what what is 8 ex 2 + 7 ex 2 -6 ex 2 - 3 ex 2

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 Jun 11, 2019
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can you please tell me what what is 8 ex 2 + 7 ex 2 -6 ex 2 - 3 ex 2 

 

By "8 ex 2" etc., does ex mean exponent?  Is this trying to say 82

 

IF that is what it means, then

 

82  +  72  –  62  –  32 

64  +  49  –  36  –  9    =   68 

.

 Jun 12, 2019

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